Method of and press for multicolor printing in intaglio



April 20 1926.

J. c. Yl-:TTER

METHOD OF AND PRESS FOR MULTICOLOR PRINTING IN INTAGLIO Filed Nov. l1, 192O 8 Sheets-Sheet l QQ my @MN NNN NNN April 20 1926.

J. c. YETTER METHOD OF AND PRESS FOR MULTICOLOR PRIINTINGy IN INTAGLIO 8 Sheets-Sheet 2 Filed Nov. 11, 1920 vwd/wl( d/fmaf/mg April 20,1926. 1,581,151-

J. c. YETTER METHOD oF AND PRESS FOR NULTIcoLoR PRINTING 1N INTNGLIo Filed Nov. 11. 1920 8 Sheetslshet 5 April 20 1926.

J. c. YETTr-:R METHOD OF AND PRESS FOR MULTICOLR PRINTING IN INTAIGLIO Filed Nov. l1,

1920 8 Sheets-Sheet 4 M Zz am April 20,1926.

' J. C. YETTER METHOD OF ANO PRESS FOR MLTICOLOR PRINTING IN INTAGLIO Filed Nov. 11, 1920 a sheets-sheet 5 vApril 20,1926.

, v.1. c. YETTER METHOD OF AND PRESS FOR MULTICOLOR PRINTING IN' INTAGLIO mm LLLLUUKLLM/ April 20,1926. 1,581,151

J. c. YETTER METHOD OF AND PRESS FOR MULTICOLOR PRINTING IN INTAGLIO IlllllIlIllllllllllllllllillll April 20 1926.

J. C. YETTER METHOD oF AND PRESS FOR MULTIcoLoR PRINTING In INTAGLI-o Filed Nov. 1l. 1920 8 Sheets-Sheet 8 Patented Apr. 20, 19,26.

1UNITED STATES y 1,581,151 PATENT OFFICE.`

JOHN C. YETTER, OF CHICAGO, ILLINOIS, ASSIGNO-R TO THE TRIBUNE COMPANY, OF i CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS. 'i

METHOD OF AND PRESS FOB IULTICOLOB 'PRINTING IN INTAGLIO.

Application filed November 11, 1920. Serial No. 423,215.

To 'aN who-mizt may concern.'`

Be it known that I, Jol-1N C. YE'i'rER, a

:citizen of the United States, residin at.

Chicago, in the county of Cook and tate of lll1nois,liave invented new and useful Improvements in Methods of and resses -for Multicolor Printing in Intag io, of

ln printing piesses of this class everyetched cylinder and impression cylinder, possesses an individuality all its own; the metal of which the circumference of the etched cylinder is made; the depth of the etching on its surface; the diameter of the cylinder, and many other conditions enter into their individual peculiarities, and these peculiarities affect the travel of the web of paper over the same, and the impressions made by them, and the impressions received by the aper Vary according to the thickness an quality of the paper; the consistency and color of the ink usedin making the impression and the moisture imparted to the paper by the saine.

Heretofore iii printing multi-color work in intaglio in which say, three colors `were employed, it was customary to use one press and to print but one color ata time in said press. Cut sheets of paper were lrun through this press that vhad but one impression and one etched cylinder, and `these sheets, after they had dried were then run throu h the impression and etched cylinder o a second press, or the same press in which a new etched cylinder had been introduced and then, after being 'dried a second time were run through cylinders of a third press, or, through the same press in which another etched cylinder had been inserted. If the same press was used for all three impressions it was necessary to re-adjust the mechanism thereof for both the second and third color yimpressions so that the impression received by'the paper from one cylinder would register-with the color impression received by the paper from the next cylinder. This required very careful adjustment l, and expert. manipulation and it was seldom possible to rint more than 1200 colored pictures an our. by the intagliol process as heretofore practiced.

My invention has for its object the printing of colored work on` a continuous web of paper that is continuously 'run throu h a press possessing a plurality of. sets `intaglio printin cylinders, in such manner, that the pecii iarities of the cylinders and the differencesV in the uality andth'ickness of the paper, and ot er conditions that might affect the same, are perfectly controlled or compensated for, and perfect registration of the impressionsare effected in the several cylinder units of the press, to produce perfect and harmoniousl .colored work, at a speed comparable to t at of .an ordinary continuous web newspaper printing press. This I accomplish by the means hereinafter fully described.

ln the drawings:

Figure l is aside view of my improved intaglio multi-color printing press. j

j Figure 2 is a diagrammatical view of the same. j l f Figure 3 is a plan view of a brokenaway portion thereof embodying the adjustable speed friction gearing; j i

Figure 4 is a vertical section taken on line 4, 4, Figure 3, looking in the direction indicated by the arrows.

Figure 5 is a transverse section taken on line, 5, Figure 3 looking in the directionl indicated by the arrows, and of mechanism disposed to the left of the same. l

Figure 6 is a side view of a fragment of the press showing, the adjustable guide-roller mechanism. i

Figure 7 is a plan view thereof. Figure 8 is a transverse section of a-detached. portion of the press showing the mechanism for adjusting the pressure of the impression cylinder.

Figure 9 is a side view of a detached p0rtioii of said machine illustrating the feed controlling mechanism.

1 Figure lO'is a transverse section thereof taken on line 10, 10, Figure 9, looking in the direction indicated by the arrows.

Figure 11 is a side view of a broken away portion `of the press embodying the mechanism for simultaneously adjusting the pressure of the impression cylinders.

Figure 12 is a plan view of one of the detached gearing units shown in Figure 11.

Figure 13 is a plan view of the means.

ioo

employed to dry the paper separated from the press.

. more a side-frames 19 of the Fi re 14 is a plan view of one of the adjustnle 'supports for -thebearings of the 1m ression-eylinder shown in Fi re 8.

e continuous web'of paper which is fed through the ress 1s taken from a transverse `roll -9 w ose removable shaft is journaled in upright endframes of a truck 10, that is capable of travellin laterally inr front of the press, and from t e latter the web passes over a ide-roller 11, then under a spring depresse idler-roller 12 and then u over a second aide-roller 13. The feed ci) web E from ro 9 is regulated by one or arallel endless belts 14, whlch pass aroundJ pulleys 15 and 16 and have their lower stretches bearing upon the top of the roll. Pulleys 15 and 16 are mounted on shafts 16 and 17, respectively, and shaft 16 has its ends .journaled in the free ends of corresponding links 18. The inner ends of' links 18 are loosely mounted on yshaft 17, and the latter has its ends journaled in the ress.A Shaft 17 de-y rives motion through t e medium of a gear 21 thereon, an intermeshing idle gear 20 (both of which are shown only in dotted lines in Fi re 1 of the drawings), and a ar 22 that derives j motion indirectly rough the medium of a vertical shaft 127 from the main shaft F and travels at the same speed 'as the latter.

From the guide-roller 13, the web of paper travels under and around a fixed gulderoller 2 4, journaled in brackets projecting rearwardly from side-frames 19 thence the web, moves vertical] upward to and over a guide-roller 25 an it then travels down under and around a similar guide-roller 26. From this last guide-roller, 26, the web runs to and around a feed-controlling roller 27 for about 240 degrees of its circumference, and then continues on its Wag to the first intaglio printing c linder of t e first printing unit, A, as wi l hereinafter more fully a ar.

Fged control roller 27,`shown more in detail in Fi 9 and 10, is mounted ona transverse sha3 28 and the latter is journaled in bridges 19'l that connect the side-frames 19, 19,y of the unit D, throu h which the web .first passes with the side rames of the next -that are verticallg7 unit A, in which latter the web receives its first. impression as will hereinafter more fully appear. One end of shaft 28 extends beyond lts bearing and is provided with a ear 29. Near its opposite bearing this shaft as a ear 30 thereon, that engages a pinion 31 which is mounted upon a transverse shaft 32, whose ends are 'ournaled in blocks 33,

s idable between the uprights 34, 34, o standards 35 supported upon and secured b screws or otherwise to the bridge 19. T e blocks 33 areA maintained pressing downward through the medium of springs' 37, surrounding headless 'of jaws, 34, 34, of the standards 35.

gage-screws 38,' which latter are tapped through a cap 39l connecting the upper ends upper end of each gage-screw 38 has locknuts 40 thereon by means of which, when s axd gage-screws are properly adjusted to lmnt the downward movement of the bearlng-blocks 33, sufficiently to produce the deslred downward ressure of a roller 41 (mounted upon s aft 32) u on the feedeontrollmg roller 27, it can locked and positivel maintained in its adjusted ition.

In or( er to raise the roller 41 rom the feed-roller 27, say, when it is desired to thread the web of paper E between the same, 1 h ave provided shaft 32 next the inside of its bearings with channeled bosses 42, shown 1n dotted lines in Fi re 10 of the rawlngs), and have provide a rock-shaft 44 the'ends of which are journaled in lugs 45 made integral with and arising from bridge 191. This rock-shaft has arms 46, 46, the upper edges of the rear ends of which are concaved and engage the channeled ortlons of bosses 42. One end of rock-Shadi 44 extends through its bearings and has the boss of a depending arm 47 secured thereon. The lower end of this arm 47 terminates in a suitable handasp and on the arm 47 between this han grasp and rockshaft 44, is provided an integral housing .in which a transverse bolt 48 is seated, which, when said arm 47 is in the position shown in Figures 9 and 1() of the drawings, is shot by the pressure of a coil-spring 49 surrounding it into a suitable depressed seat in cross-frame 19 and holds the rock-shaft and arms 46 in the position shown in the drawings: When it is eslred to raise the ressure-roller 41 out of contact with feed-miler 27 arm 47 is grasped and moved so as to release bolt 48 from its depression in cross-frame 19* and thus raise arms 46 and blocks 33.

Shaft 28 of the feed-roller is driven through the nmedium of their ear29A by a pinion connected to and revo vable with a friction-wheel 50. The construction and operation of this friction-wheel, 50, and the driving mechanism for regulating the speed thereof is the same as that hereinafter fully described in relation to the registering rollers, that are interposed between the printing cylinders of the rst printing unit and the second, the second lprinting unit and the third; and the third print-ing unit and the fourth.

It will be noticed that the feed roller 27 is a tension roller andl absolutelv controls the sup 1y of paper to the first printing unit. T us the web of paper from the feedroller 27 travels downward to a guideroller 51, thence runsto and between the etched rintingV` cylinder 7 and the impression cy inder 6 of the first printing unit A. The etched cylinders of my improved printinterstices of the etched cy are filled with ink from a suitable fountaiii`"' ing press are constructed similar to that of 'i the intaglio printing presses now in use and their copper circumferences have the in indentations and the interstices, scratche I and otherwise made. therein to rodnce the lirst impression which it is inten ed to make' 52 containinglthe first color it is desired to l5 the surfaces of the same, as heretofore.

` scrption thereof is therefore omitted. These hard rubber an 5 calle rint, andt e superuous ink is scraped g y a suitable knife or doctor 53 engagililg e construction of this fountain and knife, however, and the means` and devices used `in connection therewith are old and constitute no part of my invention and the de etched cylinders are driven through the medium of suitable gearing by a vertical shaft 23, but as this gearin is old in the art a description thereof is eemed unnecessary.

In order that the proper impressions may be made upon the web of paper the superposed impression c linder 6 of each unit is made vertically ad]ustable. The circumference of this im ression roller is made of the suction which is exerted by this rubber upon the ink filled scratches, indentations and interstices ofi the etched surface of the etched cylinder 7, de nds upon the ,iiat, as it is commonly d? made in the contacting surface of the im ression roller according to-the pressure of) the same against said etched cylinder. The reduced ends ofthe impression cylinder .terminate in and are secured to suitable ball-bearing disks 54, which latter are journaled in hangers 55, secured to and depending from the lower squared end of a vertical rod 56. a v The portion of this rod immediately above its lower squared end is exteriorly threaded and engages the threaded interior of)a bush- I the diameter of the bore thus produced is ing 57, and above this bushing rod 56 is square in cross-section. and extends axially through an adjustable screw 58. Screw l58 has its lower portion cored centrally and such that the bushing 57 just fits into it. Above this bushing, rod 56 is, within the cored out portion of screw .58, surrounded by a coil expansion-spring 59 and by turning `the bushin said spring is compressed so asl to pro nce just the proper downward pressure of the impression cylinder 6 upon the etched cylinder 7. Screw` 58 has its lower exteriorly1 smooth portion seated in -a bracket 6( t at projects, inwardl from the side-frames 19 of the press. e portion `of the screw 58 above the enlarged upper iiat end of this bracket is exteriorly screw-threaded and is engaged by a circular indentations and ynuts 67 t ereon.

66, the screw 58,-can be `moved vertically ,direction of the l l. O l nut 61, whose outer circumference 1s proyided with a worm gear 62.` This nut 61 is gterplosed between said bracket 'and a plate said bracketb means of bolts 65, 65, extending throng said legs.- 4The ich latter is spaced from the'bracket by tubular legs 64, 64, and is secured to* l uppler'end p of screw 58 extends through a smoot opening in plate 63 and has a ga e-nut 66 screwed on its upper rojecting en The upper screw-t read d end of rod 56 extends u above screw .5 8 and has lock- By loosening gage-nut up-or down by turning nut 61, and by loosening nuts 67 the rod 56 can be moved up or down to obtain just the right pressure of the impression cylinder on te etched cylinder to get the flat necessary to make the right im ression on the paper. I'

e` lower ends of the brackets, 60, are

Iprovided with lugs 68 thatv project in the lugs have pendent links 69 pivoted'therein that have transverse slack-rollers70 jour-A Analed in their lower ends. The web `of aper after it asses between the etched v'cy 'nder and the impression cylinder of the first unit A passes under said slack-roller, 70, and then vertically upwards to and around about three-quarters of the circumference of a hollow heated revolving drum 7 -1 the portion of the circumference of which, with which the web of paper comes in contact, being Venclosed within a heat-chamber 72 whose intake 73 derives a heated current of air frcm a longitudinally' disposed pipe 74.

The gear 29 on thatend of shaft 28 that L gth of the side-frames` and toward the rear of the pressA and these' iio between and driven by small friction disks 79 and 80, respectively.'

Disk 79 is mounted on a hoillowspindle 8.1, shown in dotted lines in Figure 3 of the drawings, and this spindle 81 is mounted on a longitudinal shaft 82 and is adapted to revolve therewith but be movable longitudinally thereon. .The spindle 81 is parallel to and revolves the spindle on which disk is mounted, through the medium of correspnding gears 83 and 84, and both of these spindlcs are journaled in the same block 8.5, which latter is looselymounte'd and movable laterally on a carrier 86, through the meias In c

dium of a dovetail ve and a tenon 87 entically downwards to and over the rgllgil i agin the same. he block 85 is adjusted of the second printing unit B. ater y onV carrier 86 by a transverse ad- This registration-cylinder 101 1s securely justing screw 88, and the carrier-is adjustable longitudinally by means of an adjusting screw 89. Screw 88 extends through a smoothjbore in the tenon 87 and en a lug 75 pro'ecting down from block 85, as

Y ha\ e suitable bearings in the side-frames of each of the units, referably in the same vertical transverse p ane as the bearings of the etched and impression cylinders thereof and one of these journals extends through lts bearings and has a gear 91 securely mounted thereon, which latter inunit A, derives motion from an idle pinion 92, mounted on one of the sideframes, which pinion is driven by a gear 93, fast on the end of a ,boss carried by a friction disk 94, which latter is also jnurnaled in the sideframe. In units B. and C the drum 71 is driven through the medium of pinions 91 lfast on the shafts of the friction disks 94 in mesh with the gears 91, the

friction disks 94 all being in direct contact with smaller friction disks or rollers 95. The friction disks 95, are mounted, adjusted and driven through the medium of shaft 82, hereinbefore referred to, and. by adjusting these small friction disks, toward or from the axes of the large friction disks 94 the speed of the latter and the mechanism connected therewith can be increased or decreased according to the speed it is desired the web of paper should have as it passes betwcen the etched cylinder 7 and the impression roller of the first unit, and travels around the heating drum thereof. The construction and operation of the friction devices just described are substantially the same as those shown in Figures 3 and 4 of the drawings, and hereinbefore described, and therefore, amore detailed drawing of the same, than that illustrated in Figure l, isdeemed unnecessary. v From the heating-drum 71 the web o paper asses around a guide-roller 96, thenceadvisable to add tothe mounted on a transverse shaft 103, that is 'ournaled in the side-frames of the press and las one yof its ends extend through its bearings and provided with a gear 104, as shown in dotted lines in Figure 5 ofthe drawin The gear 104 is driven by. a gear105 o shown in dotted'lnes in said figure, and the latter is secured concentrically to and made integral with the boss of a` large friction disk 106. 'lhe friction disk 106, is engaged ln smaller friction disks mounted on a spindie 107, and on a longitudinally disposed.

shaft 108, res ectively, which are'connected by correspon ing gears 109 and 110. The axes of these shafts and the friction ears ale at right angles to the axis of the arge friction gear 106, and the construction of the mechanism in which the small disks are mounted and the means for adjusting the same towards and from the center or rotation of said large disk, are the same as that of disk 50 and disk 79 and 80 hereinbefore described, and can be manipulated in the same manner thereas to enable the speed of theregstration cylinder to be controlled to a nlcety.

The construction and operation of the mechanism forl guiding the continuous web of paper therethrough, for printing the second color thereon and for regulating the speed of said web, is identically the same in the second printing unit B and third unit C, as in the first units it may be deemed press, with the exception of the last unit.y

After the web of paper leaves the guiderollers 97 of the unit C, it moves vertically upwards to and over a guide-roller 112, and then continues forward over correspondin guide-rollers 113 and 114, in a horizonte plane above the registration cylinders, to a point approximately over the friction-disk 50 that actuates the supply-roller 27. From this last mentioned guide-roller the web continues downwards to and around another guide-roller 115, and then up to and around a registration cylinder 116. The web passes under this registration, cylinder, which it engages before reaching printing cylinders of the last unit D, but passes over the latter and then continuesf downwards to` and under a guide-roller 117 and from thence passes on its way to and between the etched cylinder 119 and the impression cylinder 118 of said last unit D, which prints a single impression onthe side of the web of paper opposite that on which several colors had previously been printed.

After it receives its impression between the etched and impression cylinders of this last unit, the web extends directly to and around a heating-drum 120and from thence continues around and past guide-rollers 121 and 122 and over a cylinder 123, whose function is that of a' tension rollerv to keep the web taut, as it leaves the, drum 120, and to discharge the same tothe folding mechanism or delivery ap aratus of the press. The cylinders 118,and) 119 are constructed, actuated and adjusted in the same manner as cylinders 6 and 7, hereinbefore described, but, if desired it is obvious a type cylinder can be substituted for the etched cylinder 119. The heatin -drum pf the last unit is" rotated through t e medium of an id le friction ear 124, and a larger' friction dlsk 125 and t e latter is diiven by means. of small disks 'by a shaft 126, alining with shaft 82,

l.rock-shaft 133. Comp ementary arms 132 are secured to and project from this rockshaft along-side of arms 130, andare pro'- vided with offset outer ends. Bars 131 are extended through these offset ends and have ltheirv outer ends tapped into the ends of arms 130,.nearest the registration cylinder 101, and between the outer offset end of arm 132 and the outer ends of arms 130 carrying wheel 128, bars 131 are surrounded by coil springs 135, that yieldingly press wheels 128 againstcylinder 101. One end of saidrock-shaft 133 extends through its bearings in the side-frame 19 `of the press, and has an arm 134 projectin therefrom that terminates in a suitable andle, and

' between this handle' and its boss it is constructed withja transversely elongated segmental slot 135, through which a set-screw 136 passes, whose inner end is tapped into the adjacentside-frame 19. By loosening screw 136 the arm 134, and rock-shaft 133 can be adjusted on their common axes v`to obtain `the desiredftension of sprin s 131 and consequent pressure of whee s 128 against cylinder 101, and by tightening said set-screw this adjustment` and pressureV can be maintained. y

In Fi res 8, A11 and 12, mechanism is disclose for actuating the means that can be operated to simultaneously adjust the impression cylinders. This .adjustmentis principall accom lished by turning the nut 61, and t is is one by a worm 140, securel mounted on a transverse shaft 141, journaled eeping theweb in contact ther/e-` in suitable bearings in the side-frames of the press. The endsv of these shafts'141 extend through their bearings, and at one end they have a hand-wheel 142, secured thereto by means 'of which they can be revolved, and as shown in Figure 8 of the drawings when. said shaft is turned it simultaneously adjusts the hangers 55 in which the impression cylinder is journaled u or" down to a corresponding extent to o tain just the flat desired. 1

If desired the impression cylinder of each printing unit may be adjusted inde endently of the impression-cylinders of theother units, and,in this event, the end of shaft 141 opposite to that on which is wheel 142, may terminate in its bearings. I prefer, however, to

securely mount on this last `mentioned ex'- I tended end, a sleeve 143, whose end farthest from the side-frameof the press is flanged circumferentially to provide a circular clamping head 144. The outer'face ofthis head has a' concentric oove 145 therein that is substantially T-s aped in cross-section andv the circumferentially flanged end 146 of the adjacent end of the boss'. of a ,worin-gear 147 is clamped to head 144 and is adjusted concentrically ywith' reference thereto by means of a bolt 148 the head of which is situated in the inner wider portion of the T-shaped groove 145, and the barrel of which extends out through a suitable opening in the said rflanged end 146 of the boss of the worm-gear 147, and has a nut 149 on the outer screw-threaded end thereof with which to clamp the head 144 and end 146 together. The Worm-gear 147 is loosely mounted on the end of shaft 141, and is secured thereto by means of a set-screw 150, and said ear, 147, is engaged by a worm 151 securely mounted on a longitudinal shaft 152. By loosening the clamping head 144 from the flanged end 146 of the boss 0f wormgear 147, and 4loosening the set-screw `150, the compression cylinder 6 of each unit-can be adjusted with reference toits co-acting etched cylinder independently of those of the other printing umts, and when such adjustment has been satisfactorily accomplished in eachunit the clamping-heads 144 and the flanged ends of the worm-gears 147 are clamped together, and said gears secured to shafts 141 y'tightening nuts 150, and turning shaft 152 simultaneouslyv and correspondingly adjusts the impression cylinders of all units.

As hereinbefore stated the means for adjusting the compression-cylinder of the last printing unit of the press is the same as that y` mounted does not alinewith shaft 153, and is therefore connected to the same and is last,

actua fed thereby through the medium. of s roc ets 154 and 155 mounted on said afts, respectively and a chain 156 substantiall as shown in Fi ure 11 of the drawings. e upper end of s aft 127 is connected y bevelled gear 160 to a longitudinal idle-'shaft 161 and at the end of idle-shaft 161 opposite said bevelled gears it is connected to and drives shaft 1084 through the medium of' gears 162, shown in dotted llnes 1n Figure 1 of the drawings. A The registration rollers 116, of printing unit D, as well as registration rollers 101, are actuated by shaft 108, through the medium of friction gea-ring 163 and 164, which latter, and adjusting devices therefore are the same as that illustrated in Figures 4 and 5, of the drawings, and the pressure-roller 165 used in connection with said registration roller 116, and means 166 used in connection with the same are replicas of arms 130 and 132 and rod 131, only arranged upside down. The illustration of these ressure devices shown in Fi re 1 of the rawings are therefore consi ered sufficient. The discharge roller 123 is substantially the same in `construction and operation as the registration rollers` 'and it derives motion through a train of adjust-ai ble friction gears 167l and is engaged by pres-Q sure mechanism 168 the construct1on of which is the same as that used in conjunction with said registration rollers. 7 In view of the fact, therefore, that all of the mechanism for actuating the etched or printing cylinders, of the several printing unitsof my improved press, and the means for adjustably controlling the s eed of thel continuous web bf paper throng the same are driven from one source, namely, the drive-shaft F, the delicate adjustment particularly 0f the web'controlling mechanism, insures a erfect registration of the said web with t e printing cylinders and the impressions derived from the same, so that the correct and harmoniously colored .design or picture can be obtained, without the usual delays no'w encountered due to the withdrawal of the paper from the press, the drying of the iaper, the introduction of new etched cyln ers, the adjustment of the impression-cylinder to get the desired flat 'and adjustment of the feed to. register the paper for each impression, particularly after the first. y

While the invention has been disclosed in connection with multi-color printing in intaglio, it is to be understood that the invention is not limited thereto but is applicable to printing presses and processes capable ofprinting impressions of a single color or composte impressions of either a sin le color or where there are used shades an tints, and whether usino etched, engraved lcylinders or cylinders with raised, cameo. prlntng surfaces or type.

ders, adjustably controlling ders, adjustably controlling t What I claim as new is:

1. A method of multi-color lprinting in intaglio consisting of continuous y movin a continuous web of paper successively Eetween several co-acting sets of etched cylinders and their respective impression c linders, adjustably controlling the s eed o the supply vof said web, each of sai sets being limlted to rint only a part of the finished design, andi manipulating said web while it is passing from one set totheset next followin madey the last mentioned set to coincide in relative position to the points and features of the first mentioned set.

. 2. The method of multi-color printing 'in intaglio consisting of continuouslymovin a continuous web of paper successively getweenseveral coacting sets of etched cylinders and their respective im ression cylintlie speed of the supply of said web, eacl of said sets being limited to print only a part of the finished design, adjustably controlling the speed of the web after it leaves the last of said sets to manipulate said web botlf before, after and between each air of saidv setsy to cause the impression mage by one's'et to coincide in relative position to the paints and features of the set next precedin Hthe same.

3. The method of multi-color printing in intaglio consisting offcontinuously moving a continuous web of paper successively between several coacting sets of etched cylinders and their respective im e speed of the supply or said web, printing only a part of the finished design in each of said sets, and

, frictionally manipulating said web between each pair of sets to cause the impression made by the last of said pair of sets to coincide in relative position to the oints and features of the impression made y Ithe first mentioned set.

4. The method? of multi-color printing in intaglio consisting of continously movin a continuous web of paper successively ieression cylin-l the same to cause the impression tween several coacting sets of etched cylinv ders and their respective impression c lin ders, adjustably controlling -t e speed o the supply of said webz printing onl a part of the finished design 1n each of sai sets, heating said web between said sets, and frictionall manipulating said web between each pair o sets to -cause the impression made by the last mentioned press to coincide in relative position to the points and features of the impression made by the first mentioned 5. A multi-color intaglio printin press comprising a tension roll for ad usta 1y controlling the speed of the web og paper from the su ply roll to the first printm unit, a plurality of i*printing units each a a ted to print in a di erept color, guide rolls or con-4 isa continuously feeding a web through the press, said means including means for con trolling the speed of travel of the web the units, each controllim1r means comprising a roll engaging the' we and friction means for driving the roll, each friction means having driving and driven friction members, and means for varying the relation of said meinbers whereby the roll will effect increased or decreased feeding stress upon the web while being continuously fed throu h the press tol correct for registration of t e impressions made by the units upon the web.

7. A multi-impression printing press, comprising a series of printing units, means for continuously feeding a web through said units serially, said means including a control roll for each of said units and engaging the web enterin` said unit,V means for drivin each roll and including adjustable frictiona driving and driven members, means for adjusting the relation of said members for increasing or decreasing the speed controlling effect of the roll upon the web entering said unit for causing succeeding impressions to register with previously impressed fimpressions.

`8. A multi-impression printing press, comprising a series of printing units, means for continuously feeding a, web through said units serially, said means including a( control roll for each of said units and engaging the web entering said unit, friction gearing. for driving each roll" and includin a driven disc connected to the roll and a riving disc frctionally engaging the driven disc, means for adjusting therelation of the driving disc to the driven disc to effect variations of speed thereof and the roll for accelerating or retarding the normal speed of the web while being continuously fed through the units.

9. A multi-color printing press consisting of several printing units each comprising a printing cylinder and an impression cylinder, a roller from which a continuous web of pager is fed to and between said printing an impression cylinders of each unit, a drying apparatus for said web after it leavesl said cylinders, and frictional means'between the drying apparatus of one unit and said ing of several printing units each comprising a printing cylinder an impression cylinder and a drying apparatus, a roller from which a continuous webofy paper is fed to and between the said cylinders of each unit,

and a friction roller between the dryin apparatus, of one unit and the cylinders o t e fnext unit, and means for increasing or decreasing the speed of the periphery of said roller and correspondingly altering the speed of the web of paper fed to the last mentioned c lnders. g

' 11. A; mu ti-color printing press consisting of several printing'units each compris- Iing a printing cylinder an impression c linder and a drying apparatus, a roller rom which acontinuous web of paper is fed to and between tlie said cylinders of each unit, and a friction roller between the drying a paratus of one unit and the cylinders of tllie next-unit over which said web passes, and means for increasing or decreasingthe speed of-said roller.

12. A multi-color printing press consist-y ing of several printing units each compris-k ing a printing cylinder, anvimpression cylinder and a d ing apparatus, a 'roller from which a continuous web of paper is fed to` and between the said cylinders of each unit, and a friction roller between the drying a paratus of one unit and the cylinders of tliie next unit over which said web passes, and

adjustable friction gearing for increasing or decreasing the speed of said roller.

13. A multi-impression printing press,

comprising a series of printing units,means for continuously feeding a web through said units serially, said means including a control roll for each of said units and engaging the web entering said unit, a supply rol means yfor feeding the web from the supply roll to the feeding means, a driving mechanism for each control roll for normally-feeding the web continuously through the units and comrising mutually engageable friction memers, and means for varying the relation of the friction members for Aincreasing or decreasing the normal speed of the control roll for hasteningbr retarding the web feed into the respective unit.

14. A multi-impression printing press, comprising a series of printing units, means for continuouslyl feeding a web through said units serially said means including a 4control roll for each of said units and enga ing Vthe web entering said unit, a sup ly rol means for feeding the web from t e supply roll iio to a control roll and including a friction driving Idevice for said sup ly roll and normally acting to continuously eed the web to a control Vroll and a drivin -mechanism for each control roll for normal y feeding the web continuously through the units and comprisin mutuall engageable friction members, an

means or varying ,the relation of the friction member for increasing or decreasing the normal speed of the control roll for hasten- .ing or retarding the web feed into the respective units.

1'5. A multi-color printing press comprising several printing cy the drying'portins of said web are carried,

means for independently varying the speed of each drying portion passing said registering and printing units, and means for relatively independently varying the s eed of said registering units relative to sai drying and printing units.

16. A multi-impression prlnting :press comprising a web sup ly device having means for feeding the we continuously to a tension device, a series of printing couples, a tension device forl receiving the web from the su ply device and continuously feeding the-we to the rst couple of theseries, registration devices for each succeedin and for continuously feeding the we from a previous toa succeeding couple, fric.tion drives for each of said devices, and means in each of said drives for varying the driving speed thereof independently of each other for increasing or decreasing the feed of the web entering any ofthe couples or the tension device and during the continuous feed of the web.

17: A multi-color printing press consisting of several printing units each comprisin a printing cylinder 'and an impression oy inder, a roller from which a continuous web of paper is fed to and between said printing and impression cylinders of said units, a tension roller for controlling the speed of said web'to the first of said units, a drying apparatus :for said web after it leaves said cylinders and frictional means between the drying apparatus of one unit and said cylinders of the next unit for increasing or decreasing the sp'eed of said web.

18.'A multi-color printing press consisting o f several printing units each comprising a`printing cylinder and an impression cy inder, a roller from which a continuous web of paper is fed to and between said printing and impression cylinders of said units, a tension roller for controlling the speed of said web to the iirst of said units, a drying apparatus for said web after it .leaves said printing unit, frictional means between the drying apparatus of one unitand the cylinders of the next unit, for increasing or decreasing the speed of said web, and a tension roller for keeping the web taut aftersit leaves the last unit.

f19. A muti-color printing press consisty ing of several printing units each comprising-a printing and impression cylinder, a drlyng apparatus, a roller from which a continuous web of pa er is fed to and between the cylinders o each unit, a tension roller that controls the speed of said web from said roller to the first of said units, a friction roller between the drying apparatus of one unit and the cylinders of the next unit, and means 'for increasing or decreasing the speed of the periphery of said friction rollers and correspondingly altering the speed of the web of paper fed to the cylinders of the ne-xt printing unit.-

20. A multi-color printing press consisting of several printing units each comprising. a printing and. impression cylinder, a drying apparatus, a sup ly roller from which a continuous web o paper is fed to and between said cylinders of each unit, a

tension roller that controls the speed of said` web vfrom said supply roller to the first of said units, a friction roller between the drying apparatus of one unfit and the cylinders of the next unit, means for increasing or decreasing the speed of the periphery of said friction rollers and correspondi 1y altering the speed of the web of papernd to said printing units, anda tenslon roller for keeping the said web taut after it leaves the llast unit.

21. In a printing press comprising print-- ing units each including printin and impression cylinders, means for fee ing a continuous web to and between the-cylinders of each unit, said means including cooperating friction driving and driven members, and means for adjustin the relation of said members during the eedin operation of the f eedin means whereby t e speed of the web may increased or decreased as it moves to said cylinders for correct registry of the impression made on the web.

22. In a printin press comprising printing units, each inc uding a printin and an impression cylinder, a su ply rol er from which a continuous web o pa er is fed to and between said printing van im ression cylinders, frictionally driven means tween said units for increasin or decreasin the speed of said web in ependently o v the speed of the cylinders of said units, said means including mutually engageable 4friction members, and means for varying the relation of said members for effecting variations in the driving speed thereof.

In witness whereof I have hereunto set my hand this 18th day of October, 1920.

- JOHN C. YETTER. 

